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<?php
/**
* WP_Application_Passwords class
*
* @package WordPress
* @since 5.6.0
*/
/**
* Class for displaying, modifying, and sanitizing application passwords.
*
* @package WordPress
*/
class WP_Application_Passwords {
/**
* The application passwords user meta key.
*
* @since 5.6.0
*
* @var string
*/
const USERMETA_KEY_APPLICATION_PASSWORDS = '_application_passwords';
/**
* The option name used to store whether application passwords is in use.
*
* @since 5.6.0
*
* @var string
*/
const OPTION_KEY_IN_USE = 'using_application_passwords';
/**
* The generated application password length.
*
* @since 5.6.0
*
* @var int
*/
const PW_LENGTH = 24;
/**
* Checks if Application Passwords are being used by the site.
*
* This returns true if at least one App Password has ever been created.
*
* @since 5.6.0
*
* @return bool
*/
public static function is_in_use() {
$network_id = get_main_network_id();
return (bool) get_network_option( $network_id, self::OPTION_KEY_IN_USE );
}
/**
* Creates a new application password.
*
* @since 5.6.0
* @since 5.7.0 Returns WP_Error if application name already exists.
*
* @param int $user_id User ID.
* @param array $args Information about the application password.
* @return array|WP_Error The first key in the array is the new password, the second is its detailed information.
* A WP_Error instance is returned on error.
*/
public static function create_new_application_password( $user_id, $args = array() ) {
if ( ! empty( $args['name'] ) ) {
$args['name'] = sanitize_text_field( $args['name'] );
}
if ( empty( $args['name'] ) ) {
return new WP_Error( 'application_password_empty_name', __( 'An application name is required to create an application password.' ), array( 'status' => 400 ) );
}
if ( self::application_name_exists_for_user( $user_id, $args['name'] ) ) {
return new WP_Error( 'application_password_duplicate_name', __( 'Each application name should be unique.' ), array( 'status' => 409 ) );
}
$new_password = wp_generate_password( static::PW_LENGTH, false );
$hashed_password = wp_hash_password( $new_password );
$new_item = array(
'uuid' => wp_generate_uuid4(),
'app_id' => empty( $args['app_id'] ) ? '' : $args['app_id'],
'name' => $args['name'],
'password' => $hashed_password,
'created' => time(),
'last_used' => null,
'last_ip' => null,
);
$passwords = static::get_user_application_passwords( $user_id );
$passwords[] = $new_item;
$saved = static::set_user_application_passwords( $user_id, $passwords );
if ( ! $saved ) {
return new WP_Error( 'db_error', __( 'Could not save application password.' ) );
}
$network_id = get_main_network_id();
if ( ! get_network_option( $network_id, self::OPTION_KEY_IN_USE ) ) {
update_network_option( $network_id, self::OPTION_KEY_IN_USE, true );
}
/**
* Fires when an application password is created.
*
* @since 5.6.0
*
* @param int $user_id The user ID.
* @param array $new_item The details about the created password.
* @param string $new_password The unhashed generated app password.
* @param array $args Information used to create the application password.
*/
do_action( 'wp_create_application_password', $user_id, $new_item, $new_password, $args );
return array( $new_password, $new_item );
}
/**
* Gets a user's application passwords.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @return array The list of app passwords.
*/
public static function get_user_application_passwords( $user_id ) {
$passwords = get_user_meta( $user_id, static::USERMETA_KEY_APPLICATION_PASSWORDS, true );
if ( ! is_array( $passwords ) ) {
return array();
}
$save = false;
foreach ( $passwords as $i => $password ) {
if ( ! isset( $password['uuid'] ) ) {
$passwords[ $i ]['uuid'] = wp_generate_uuid4();
$save = true;
}
}
if ( $save ) {
static::set_user_application_passwords( $user_id, $passwords );
}
return $passwords;
}
/**
* Gets a user's application password with the given uuid.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @param string $uuid The password's uuid.
* @return array|null The application password if found, null otherwise.
*/
public static function get_user_application_password( $user_id, $uuid ) {
$passwords = static::get_user_application_passwords( $user_id );
foreach ( $passwords as $password ) {
if ( $password['uuid'] === $uuid ) {
return $password;
}
}
return null;
}
/**
* Checks if application name exists for this user.
*
* @since 5.7.0
*
* @param int $user_id User ID.
* @param string $name Application name.
* @return bool Whether provided application name exists or not.
*/
public static function application_name_exists_for_user( $user_id, $name ) {
$passwords = static::get_user_application_passwords( $user_id );
foreach ( $passwords as $password ) {
if ( strtolower( $password['name'] ) === strtolower( $name ) ) {
return true;
}
}
return false;
}
/**
* Updates an application password.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @param string $uuid The password's uuid.
* @param array $update Information about the application password to update.
* @return true|WP_Error True if successful, otherwise a WP_Error instance is returned on error.
*/
public static function update_application_password( $user_id, $uuid, $update = array() ) {
$passwords = static::get_user_application_passwords( $user_id );
foreach ( $passwords as &$item ) {
if ( $item['uuid'] !== $uuid ) {
continue;
}
if ( ! empty( $update['name'] ) ) {
$update['name'] = sanitize_text_field( $update['name'] );
}
$save = false;
if ( ! empty( $update['name'] ) && $item['name'] !== $update['name'] ) {
$item['name'] = $update['name'];
$save = true;
}
if ( $save ) {
$saved = static::set_user_application_passwords( $user_id, $passwords );
if ( ! $saved ) {
return new WP_Error( 'db_error', __( 'Could not save application password.' ) );
}
}
/**
* Fires when an application password is updated.
*
* @since 5.6.0
*
* @param int $user_id The user ID.
* @param array $item The updated app password details.
* @param array $update The information to update.
*/
do_action( 'wp_update_application_password', $user_id, $item, $update );
return true;
}
return new WP_Error( 'application_password_not_found', __( 'Could not find an application password with that id.' ) );
}
/**
* Records that an application password has been used.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @param string $uuid The password's uuid.
* @return true|WP_Error True if the usage was recorded, a WP_Error if an error occurs.
*/
public static function record_application_password_usage( $user_id, $uuid ) {
$passwords = static::get_user_application_passwords( $user_id );
foreach ( $passwords as &$password ) {
if ( $password['uuid'] !== $uuid ) {
continue;
}
// Only record activity once a day.
if ( $password['last_used'] + DAY_IN_SECONDS > time() ) {
return true;
}
$password['last_used'] = time();
$password['last_ip'] = $_SERVER['REMOTE_ADDR'];
$saved = static::set_user_application_passwords( $user_id, $passwords );
if ( ! $saved ) {
return new WP_Error( 'db_error', __( 'Could not save application password.' ) );
}
return true;
}
// Specified Application Password not found!
return new WP_Error( 'application_password_not_found', __( 'Could not find an application password with that id.' ) );
}
/**
* Deletes an application password.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @param string $uuid The password's uuid.
* @return true|WP_Error Whether the password was successfully found and deleted, a WP_Error otherwise.
*/
public static function delete_application_password( $user_id, $uuid ) {
$passwords = static::get_user_application_passwords( $user_id );
foreach ( $passwords as $key => $item ) {
if ( $item['uuid'] === $uuid ) {
unset( $passwords[ $key ] );
$saved = static::set_user_application_passwords( $user_id, $passwords );
if ( ! $saved ) {
return new WP_Error( 'db_error', __( 'Could not delete application password.' ) );
}
/**
* Fires when an application password is deleted.
*
* @since 5.6.0
*
* @param int $user_id The user ID.
* @param array $item The data about the application password.
*/
do_action( 'wp_delete_application_password', $user_id, $item );
return true;
}
}
return new WP_Error( 'application_password_not_found', __( 'Could not find an application password with that id.' ) );
}
/**
* Deletes all application passwords for the given user.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @return int|WP_Error The number of passwords that were deleted or a WP_Error on failure.
*/
public static function delete_all_application_passwords( $user_id ) {
$passwords = static::get_user_application_passwords( $user_id );
if ( $passwords ) {
$saved = static::set_user_application_passwords( $user_id, array() );
if ( ! $saved ) {
return new WP_Error( 'db_error', __( 'Could not delete application passwords.' ) );
}
foreach ( $passwords as $item ) {
/** This action is documented in wp-includes/class-wp-application-passwords.php */
do_action( 'wp_delete_application_password', $user_id, $item );
}
return count( $passwords );
}
return 0;
}
/**
* Sets a users application passwords.
*
* @since 5.6.0
*
* @param int $user_id User ID.
* @param array $passwords Application passwords.
*
* @return bool
*/
protected static function set_user_application_passwords( $user_id, $passwords ) {
return update_user_meta( $user_id, static::USERMETA_KEY_APPLICATION_PASSWORDS, $passwords );
}
/**
* Sanitizes and then splits a password into smaller chunks.
*
* @since 5.6.0
*
* @param string $raw_password The raw application password.
* @return string The chunked password.
*/
public static function chunk_password( $raw_password ) {
$raw_password = preg_replace( '/[^a-z\d]/i', '', $raw_password );
return trim( chunk_split( $raw_password, 4, ' ' ) );
}
}